Award-winning Press Association photographer Lewis Whyld tweeted:
Lets be honest the new Royal baby photos are not very good, you know, photographically. If you're ill see a doctor, not a mate. Expertise.
@adamblenford yes, the light is terrible. The memory is captured but it's just not very beautiful. A shame and a missed opportunity.
Whyld has been behind some of the most viewed images on the ITV News website, including lightning behind the London Eye, Ed Miliband's egging and a 360-degree photo of the royal baby's first public outing.
Getty's royal photographer Chris Jackson told ITV News Michael Middleton's pictures of Prince George were "charming" and a "good all-round effort".
He said: "In the future, I would recommend taking photos in the early morning or late evening when the light is turning to give a softer light to the image but it's a good all-round effort and it's a very charming image."
Eddie Mulholland, vice chairman of the British Press Photographers Association, told The Daily Telegraph that Michael Middleton's pictures of Prince George were "lovely snaps" but "not what you want for such a historic picture."
He said: "They are lovely snaps for a grandfather to have taken, but in terms of the quality, they are not really what you want for such a historic picture.
"I would be pleased with them if they were for me and my family, but they look like they have been taken with a mobile phone or a consumer compact camera. It would have been better to have seen it done properly given that this is the official record of the future king."
He added: "The photograph with the dogs is the worst. One of the dogs in the corner looks like a furry rug, and part of the Duke’s head is wiped out by a patch of light coming through the trees."
The photographer who took Prince William's baby photos has praised the snaps of the Duke and Duchess of Cambridge with their newborn son, Prince George.
Ian Pelham-Turner gushed he "really loved" that he could "see the love in Kate's eyes towards her father".
Michael Middleton follows a long line of photographers to have captured important images of members of the royal family.
Little is known about how much experience the British Airways flight dispatcher-turned-businessman has behind the lens, but as the first official photographs to be taken of the future king, the pictures are sure to have their place in history.
The intimate family portraits were taken in the garden of the Middleton family home in Bucklebury, Berkshire, earlier this month and for Mr Middleton, they are not only of a future monarch but of his first grandchild.
Martin Keene, head of pictures at the Press Association, said the photographs were impressive. "Any photographer would have been pleased to have taken them," he said.
The first official photographs of Prince George have been released. Lying peacefully in the arms of the Duchess of Cambridge, the newborn, who is third in line to the throne, seems to be sleeping in the pictures.
The intimate pictures were taken by Kate's father Michael Middleton in a shady spot of the garden of the family home in Bucklebury, Berkshire, earlier this month.